Test your basic knowledge |

Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. 1. bring in new genes - 2. replace males with leg problems (difficulty breeding) Note: culling has a much greater emphasis in the dairy industry vs the beef industry.






2. 283 days






3. Allows extension of penis without fibro-elastic penis






4. (LH) stimulates the Leydig cells to produce testosterone






5. Prevent the cow from getting an infection from the calve






6. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






7. ~60 days before calving






8. 30 hours after estrus begins






9. Failure to have one testis (gonad) to descend






10. 1-2 days






11. 114 days






12. Animals which have only one estrous cycle (ex: dog - fox)






13. (FSH) causes egg to mature in females






14. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat






15. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days






16. Animals which have many estrous periods per year (ex: cow - sow)






17. Produce testosterone. located between the seminiferous tubules






18. Actual heat cycle (period)






19. To remove/separate testicles from animal's body before animal reaches puberty






20. Start of the reproductive tract for the female. located outside of the body






21. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co






22. Milk is 15% ________ and 85% __________.






23. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has






24. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract






25. Look for infection - split - and rupture of the penis






26. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm






27. Sperm is produced here






28. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed






29. Not under a timeline - cow can not be sold as steak






30. Urinary calculi.






31. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %






32. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm






33. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm






34. 336 days






35. Milk is 15% ________ and 85% __________.






36. When are steers and heifers weaned from bottle feeding?






37. Why does estrus happen before ovulation?






38. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.






39. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge






40. Front feet and head first. (except for hogs and dogs)






41. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders






42. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)






43. Allows extension of penis without fibro-elastic penis






44. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)






45. 283 days






46. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)






47. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).






48. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation






49. Start of the reproductive tract for the female. located outside of the body






50. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers